Finding the Fourth Proportional to 257,805.28, 386,707.92 and 80,326.63
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Solution
The fourth proportional to 257,805.28, 386,707.92 and 80,326.63 is: 120,489.95
Step by Step Solution
- Step 1: Write the proportion equation
257,805.28 : 386,707.92 = 80,326.63 : x - Step 2: Convert to fraction form
257,805.28/386,707.92 = 80,326.63/x - Step 3: Cross multiply
257,805.28x = 386,707.92 × 80,326.63 - Step 4: Simplify right side
257,805.28x = 31,062,944,007.91 - Step 5: Solve for x
x = 31,062,944,007.91/257,805.28 - Step 6: Final answer
x = 120,489.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.